We encourage developers to integrate what3words into their applications, and we want to make this as easy as possible.
We offer two ways to access our API: online, documented in detail on this portal, and offline.
Our focus is on widespread adoption: as such, access to our online API is currently completely free and you can sign up for an API key below. We intend to introduce different pricing levels in the future (depending on volume and type of requests), but there will always be ways to use it for free, particularly for low volume.
For access to our offline SDK we require a separate licence agreement to be signed and, depending on your application, we may waive the license fee. Please contact us on email@example.com for more information.
Please explore our API portal: you should find all the details you need to use our API, as well as additional useful information to help you make the most of what3words.
The JSON API has 14 methods - see the reference and sample code for more info.
You are allowed (and encouraged!) to use what3words brand assets within your app/software where appropriate.
We also ask that you follow our very simple style guide when referring to what3words.
Please get in touch if you want anything else.
Convert a batch of lat,long co-ordinates to 3 words, or vice versa using our free batch conversion tools.
The what3words iOS and Android apps include a URL scheme to allow you to link directly into the apps.
Read about existing w3w API implementations, news and ideas in our Tech blog
For API technical support enquiries please email firstname.lastname@example.org
For API account enquiries please email email@example.com